THUNDEROUS
Source: 566, 567
thunderous. Thunderous, a. producing, or causing thunder
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Thun″der‐ous (?), a. [[Written also thundrous.]] 1. 1. Producing thunder.
How he before the thunderous throne doth lie. Milton. 2. 2. Making a noise like thunder; sounding loud and deep; sonorous.
— Thun″der‐ous‐ly, adv.